Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7d07bd507c6d62ced45e52a50f179f1a30abd45420ef0ada608a6ca978db8e9d' 
  AND token = 'cBb+1KL0APzZ76qy0i3Khjc3RbmwYO0TTo9TMxmo/BI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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