Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1fb746f899b76482cc2cb0f98494af5f253186c86077d0f28730369e5149c97' 
  AND token = 'SnWJekgvPisk0Ub4+YWhdpC7YcNLmiAY4n7T5/pmzsg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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