Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'be2ae42afeeaed68262e9dcde5169ff75e2deb8ad54125b5aedc08c4c3af394f' 
  AND token = 'opB2FUAlvVDgODgJAy/xVjKtsmBxPJjPSVVhW6jbyf0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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