Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd805155a0d0d787200c8784e78705b5dcd3a7bad6785bc0a8c1b74c46b3cc69c' 
  AND token = '7YJ72MLOsEN4lie73ijcJjII3e41vpmh05zuPHHWMrY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}