Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '053a945ae5d4a5087e9237c0c5f517814bf0929c181048a86aa0434d6301ffed' 
  AND token = 'c6HDuIcucok5SGjcj9S0U5GAiJk8C7+rXaCQI94Xv7Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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