Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3140f850168f6c657b2c33922d1c124936e9dd48407dea80abc043beb9fe9d0b' 
  AND token = '3ewESgLW2zDK22WN1evQItdJSx1i+Xlc38qOjiqAhow=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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