Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7dfaf2aee9c77ddffc0b3641802399afbe1734669265c161f7fd74d7ebb378fe' 
  AND token = 'Y+/a8bdiItT+2syu+B+FVea+09WdhqFZCZqhqssB1f4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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