Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4320a42ff4d2ef5740abd721a2605012ff5f16204c50c5d4468cad39769b1a8e' 
  AND token = 'Yhze0S55KNNWt0uEamiOa7+UzVP2+mOVfPRk3bdz280=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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