Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8cb8c16ea830e5a0101d66ad4e07071ff12f709990442dd1730bcf7a3ea73724' 
  AND token = 'rWwAmctzbTcyFaHUsoyHtA9g/AS0RziJiLU+qLr57x8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00519

JSON explain

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