Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6d3124d297abf035c2783d50a504a732aa9623d6b20c84f7524bf837dbd7642d' 
  AND token = 'l2dKLI6gPzrKPLcIU+riQbr2zHJooBpKkQm7GZzT5Ec=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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