Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c3205baf80b918cec249b1d0482099fd81e4cccbb5f6a0b626134c2592bbff30' 
  AND token = 'RpkcyaR+YA4S0YD14VKF7pamQT/Hm/P5U9Y3LwrO2i0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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