Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fcb8c4126cbb4e4e9d72c138c358831e80302580d2a16392fce72ee7f47b0d5d' 
  AND token = '8xE14O+0HTICZ3GOvk2gd5BQeL/DMRENDW722MIg9SY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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