Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '871b224ffd933d7491aecd5ea8793c15aaad56a2800da0483a36e5fa70e10d2a' 
  AND token = '57ewOR1t8hDGPOFBnF2uJWGyM1sNeEOuIDand53trM8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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