Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'efac386cccae3f1e6070221e50795e702e772ba2455e12d4a7c2757abc06d204' 
  AND token = 'uFx2pySVidS+tTHLFQL/tuUO32E0QLpl5FvROqcbI9Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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