Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9d3da24c647bae2cb8f1f5731289ffd52cf501116c2260ee7594ec8abeb86bc4' 
  AND token = 'Ke2Q9jtDJRaqi95RiSZgGq8489f/6uibfvqpqH6Cl24=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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