Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c080583125c9eae1e42bb3c6622079c462d32052c464a5118dc2d1542d827111' 
  AND token = 'NN3DIU0JLo4aBAbMWfi1huT75bHRSssf2hUgQh1ShDw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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