Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0b56264842804ccbbd6f973bb2778ab809e48e125b9d2b91d477c26c42605146' 
  AND token = 'v9CKEosdAXM23pSnhlm8Cfb+t/pwmmgunOSN1FT5s50=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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