Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec8aa66afa6e13032eb663ae4a583132258486900ceec525194fe7ac956d78fd' 
  AND token = '6HLUVUZhKwN6/G980tNttw4R0T2qi4UZzeuDPLXA/jo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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