Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7d8d2d1ec34e2f0f01b8ebfc280c0a8c5d25977805284781ef2c13044b45e945' 
  AND token = 'Mn/tNeH55WKojE9n7qt98u8Bk+Qxrj1+YzhKy38pHpM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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