Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5082be3760898ef286821d86ec1bc0ae163c6efb56b078596253b5d90a9f3b59' 
  AND token = 'rTbWFOETID1iQ8BVNW2VcZU60kvdydtRGPe0UxaFj7A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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