Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f261a16350f793d85eaf0cac372ead391fe9d1b04918890ed5912831e60beeb7' 
  AND token = 'qaxDgH2XE0lNphSSvP3Acgju0LBErf3cE9sFEAjMKHc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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