Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66c7d86007403ba369d3a10d4a0f537e0b933f60bea039f5239270f16b7cdd43' 
  AND token = 'pjYsyiwXyuFyPqxubKFApe4EHkSGuZYoF8FV+lYkY6c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00070

JSON explain

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