Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6640fc38a2011d04821ff47f144dfa85af30fe9a5626a07ce7b4ae677704923f' 
  AND token = 'bWEqeCLN9332Dsnk2i5/DWgJHAJ6X91XoKwxyo61rGI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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