Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '190cced6e61a967395d7349da41cb3c81ce8b63482ab5885d0e27169d9aea9d2' 
  AND token = 'u7Mxoy9pfK+hnAWRbPQO78+r3/DSpHkaIdicls2uOo8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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