Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65e5191179eea10c3bf007a94dc655aec3b966abd91cc1f89be7daf5cb094de7' 
  AND token = 'mriYj6RQ7gsAKiK7D/N6vs82LjeIu0Vd/r0rWljZY0A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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