Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd7597c126fa48c4e9a4c8145432b0d48f7efabb959185fcac352b7f6ef8a5de8' 
  AND token = 'Ajo8gBJ0fftX4AKd/s9nKbYza0K/fxy15dxzAMy2tao=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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