Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '02b27086a8949b3024381edbd27cf6eaa8b4368aa8613092f93b4dae9dd37d38' 
  AND token = 'wjmN7gvi62qInY4Y0P+CPU0xjSInXfgHEQ+ckv1xyeY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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