Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cb1578565c657370b7b1bbd425566f761be0d43b7e3ec105023b450da0ffcd96' 
  AND token = 'YtlVGwV80M5+NP1lJ/TxNlVFHtJErRLZwk/pw4ikFao=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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