Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '827b9084e36ceacca0c7e360f761bb9c9547fc6acb400c4dfa7ca46d1963108d' 
  AND token = '44y3X+fNphp2k+8uNt2zyX0/AKiYQvYocJpRcpOFu8I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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