Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d2dddf792b0282d2e17c4a8e3ff0c38aaee55797f599c722031d62fd530db5b' 
  AND token = 'ZPsRwX7PSSaWp+JYBW8jijGWTLYOD0Xl+dr/nQb8mbE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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