Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ab9067ea8c7ff2361787df0017b7248c67f2c35ae8388cbe66b0c73e84f825c5' 
  AND token = 'CjHAppUzYo9EcM0rC91MBJ0zVp41EJ59jW7q5StNztQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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