Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f29330eb970866d0a9ea5a0cae3294862c6162b35657e5865a2057543644e088' 
  AND token = 'RxviNJGs/Z245N96ujuZnuypxTu978WM/rDc93J5y2I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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