Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'adb35d10f3b94a98cc2ebec86555559d95384fdfe068784575ce21597fa0c883' 
  AND token = '+12Tbft6w4SLk+2znKGs0RD6uHqcx43Gs3lTVpNNSsc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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