Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '88c25abcec4081e37b6716eb42fde690f9b68a62c86bff1906bd09deb735f828' 
  AND token = 'S03gmHrKHL6QVrWnvA302wpFEqNufIWH+krz53Go6+A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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