Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e989f8cafd7049f88f6b4512ec4a85dd34a57133f8cd724cd3ec1ee8282963a9' 
  AND token = 'tZ9uobIxxP9K4WgsuW0HE1F7TQ4t7IgN5XowpMN3ZPo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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