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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0292e2591722082c0b7e5539ee6d82db43b9147bde889babf7c6b8299d0bff16' 
  AND token = 'Wmw0Ja0pzO1DD8WKSOSYAads4q9eFgu0G1ec4XOUNdQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}