Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dd95ca7fc5488128461b397619f1759f3004c83b223f11911fc86591fa8791e4' 
  AND token = '/re+Jr/1OQjVXO+iBOlN72MZ4s00cIQfFTqlFDpa9Cg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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