Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eae3795c0052f4309decb2755aae09a362fd8d705eae427c3ac759c50305ee7f' 
  AND token = 'CstYE71nqRd7hiN5zmb6J8nNrcuDa2odwDnoMtty/fg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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