Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '342b091e4ebc254a8b34fc480c970c9c69bf88eb131eea28da262b66012d7898' 
  AND token = 'Ad05PpeBNQN0DzI8i1MlsKi/bHyh3vQy1tAZ4BHXDCk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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