Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e93bbb36da999e8c8742f39543fbbf68dccdaf6e7fb38ff90268dc6fb6171a95' 
  AND token = 'Z2GuARsh08hDV2/amOhgu+gDY1IzQUFUFaebfFHQ+8o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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