SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e22fdcadb036dc476b88c7e882ceae949642cbf648ae3be3c119791f218c5651' 
  AND token = 'BgXzcX0fu8LpX4g/qRiSFmdl4vulg+6p/vJsB22GuNY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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