Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e15536e2afe90cd5af2d8b70ade3a20c883fef8166f062025d2939fcd45b462' 
  AND token = 'OWzOGyzMhamVWOV98mjNQDFKFyqMXbZXdhpCRtbIam8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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