Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '31360c1792d3f89b120ef4622d5d58ffead0dc6559009c41add72000af66014a' 
  AND token = 'nh9TBEL8Drlepc1OLCBajQvabyZa3VujMVipGGSVJZ8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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