Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '080fb21c67ae92acede9c09b9823b2915f6621e3f75a5c2d322835539276ac4a' 
  AND token = 'vSs9IjtMqJnAUXbepFs+UZid8j+mb13/n2JOD1niSuM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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