Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04490d0cb685ba09975cd01d0b74e948809244b1308d96fbe6dee2a2a52a5649' 
  AND token = '3OkJX6cPlsZnfQuG9ZpMza/9dxxGsiT8gxM2LSRWLyA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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