Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1dfa0adc05e346fa53a74927e42159dca974e1bd6fe344be9d9194cdf2b60715' 
  AND token = 'aoGSsqiE7/R7rRPVzCl9vxFQRZJOomxOdlC24H6zxLM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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