Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd56f0caa9517dd83a9f85f528e451fb7da0b7e30645cfb56196f958069728519' 
  AND token = 'xkQ+9Az/6iXQ4CeR0Bb4UhHcEfLm5OK5uK408+fPAz8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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