Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '62b3bbf93e5f33c0b6a25b1e7509870d30f79d5b458cf6acc060b63941d4eb78' 
  AND token = 'Uu5r7BR8OweKx7gPkQleGLL9T/6dFVf08GOzV6slyoM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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