Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a2e3aefe7e1c3115e3e88427a0224deb7445494acda0154347b3550590799b0d' 
  AND token = 'klKdtklhj2BLInlo9UZUP1vN9dCEE4pIysmRgX5X1us=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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