SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60d3e8c9f9a465fd294a1346bb8d7ae247f567a0a46072e0966c81ef66585bea' 
  AND token = 'ocE8iGMvmbn23YR+8JQqHAiNTTlm/nuBtoXqgfveZqk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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