Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'defce822b9240d2c7a2fc2227e030deb6b02ad873d265e6eedf59e6140d85001' 
  AND token = '99cDp7sqCJ91/7wk2a8wwoJ+gebwQr3ddG1BfG7hO6Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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