Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd18620764475a7e1cc03002305043360b61d726e61c90fef65777672f9ca9c03' 
  AND token = '/+jsxpw5Vvt6qc9iE1YXG3fhzIi5v7dUcVEvX1p/9fc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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