Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a1d787431140cacc75d58313e982751fee5d1e769b8108a8c8d45c72205b7ebe' 
  AND token = 'VRpFRtIBbMtuirasinI2sIMe/TzRDg8BsFXOQt7+wDw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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