Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0452c90db8f15ef11b02e012952f0c6557a05c2c02c2852f20412fdcd3fe0d44' 
  AND token = 'Xqq7LOKolS8f9aa5yOUKP9+qSDzyG+hLpSDoDKqiMHM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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