Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e2323bc2508f5561d68445c34e6831970e1fc2b6a315c4e2ddfbecada3d32655' 
  AND token = 'bShlf8mYm5wo4gVtz/MDc4oJnFp9v8agjk+L7UT8Y60=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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