Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4566b9d5ea944461809fc65a311f4bd343d697a7d20a422a495c0b55a6bae46d' 
  AND token = 'fsrslfpqQ9UC7oNlY8k6oM1k2LQyzCahZPIdhTfasi0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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