Sandbox

SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '0bcd412579114063d6f33e5493b8f497b7613b7076116b3100955f20716c86bd' 
  AND token = 'RzYgbNW6fW1URQSx1aP5FMRTwWzuZpsbhMxdJszD3v4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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