Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c3aeae6d7fde841c28f375fdd5930729f8f92e03897e62347059a46f03a37a9' 
  AND token = '3CFJy5fCvoGZSJ21SAO58kI87vWu4168hyB0ALrJwN0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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