Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22780bb57968711167bfbe76cc8cc7a77a96df07abccd84d6758fc8e1e28d56c' 
  AND token = 'owX2FW5ftCFKvtne6s0lfNztAAIvQ2nuYY/HoqW2luI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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