Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '67b36c425c06563a27af83cb661be3e67669c3e85a9ca6f49be6c7a788e9d205' 
  AND token = '6FPHIysESZG3a+WnEfPe/dGzcxiGlSTg/z0dqCPcQ4Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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