Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ca42ed2479eaf80793ac53ea0710932dba8b52db320b2af55f2edb99f8a19935' 
  AND token = 'bQGKnsX+A1RTCxAqByiXGZBThKMTUlAAQciaLlMDIsc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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