Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25eec01a5ccce13e23d2cc27805df5148e01f461b8d25f931542b71cb4d5dc1b' 
  AND token = '6Y1FNXrjwsDRhs37dJhuP9+0/s1phjpiuWhfv96D3RI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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