Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0599ee456a57e44926cdc4a7f4786a7c0cd54d66c0dbd5e4cddcd21a1ef0a7db' 
  AND token = 'XArnz+GwxB7Nlm8yuqSgMXjmyk7RekawV3ejdqJWqKw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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