Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7103cc588dde443b234a6bdd36abf922fb5e60cd47a0ee10da926de8df7b862f' 
  AND token = 'IfgHvfioRXcQ22z4nkSX4GprI1bWDCfJ3UDh9+HcbrE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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