Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6470f9dd108e72b68b2c614028427c25d5b03cdb1aaf368d99e2dde3cdd14ddc' 
  AND token = 'aogNPy4qcc6KzxPY9TAKOrZ6A/1+hWmDd72iguq+UL4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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