Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd693b81bac639b71254135023f2fb17dbdcd554b079bf313b8154e66d4e68a9d' 
  AND token = 'JOGDtkq/u85HyUetBklL7Cc8lSJrk/hRi6C3r7V6QhA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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