Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e111e2e325bcfb0822829a583cda56860bae2c6c36b2d0590923ba3a3b95a9b4' 
  AND token = 'fIYBmYn5qr+l6sV7HSwthC6257ESZrdDS2vCqoE0XDo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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