Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '067434f7a600d661f13a46975fbb0fa2d3f9c3f029055e2f002194a67f997ee7' 
  AND token = 'RpAmLTwVXCtRb7zTd55h9OtlhFwnVXJSIavpvprYVYQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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