Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '78e6f023f1dd583837b1c81bc57b6c00a7e0b64cdbd470356409d177bdff459e' 
  AND token = 'bH/gqAVxsHL2i1X1EdqoYLIjiZTxSk2lXVlyY7wyX8E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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