Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cda7f0bdd41fa078186b091f2c9271c0c5d8f29dabc43ddd6112f125bc35ef6e' 
  AND token = 'bDILvRn4VgwTh7jk+eA/3AlmzCg8oAazKDsxUzaFyDo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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