Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25eca030b63836174851ece3357d1b74cdd0172eac384c181b49d8c07a72be05' 
  AND token = 'kt7fX2xmgXCtlus/8uoBK/AImk1UU0dJKw64LNVx5Rc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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