Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd95556f0a46c15a6ce481d2aa4e33d0b46905bc4323e34a9038604f21b53d5c4' 
  AND token = 'eYvMqG+l8xG0gE4tISQ6pbqoZj2EUHGqqFhDTaQsyHI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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