Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97baeb8217d6dd7d90ed610dd99e460117d6c62d68f44370c0240009075b9ac5' 
  AND token = 'JNopTItGl8s0FKqF0N7m3a/W2AV8qjZ+TUQ0Vu1zF+0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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