Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '090144a92ac1b6c37fedd5e2632f76275b9e0786a3ce4563f2637bc41ab39eea' 
  AND token = 'YjtfUoeqg25xf7n+gkO9uUl5x88YYujEgNR3NvTxRm8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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