Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9184ef8f2009db9c3f538f803710ec4ab1b00170989e1fef11dd17284fa759dc' 
  AND token = 'FRsQVuTSF2acOJMyWK+qOmSJZyP0lNnOKgfUmR/rg9I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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