Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fb7a00f6c09565451480bf3d2b3e06ad7ef0c97542db3b25cdbbfddefe862008' 
  AND token = 'Rbn9hXv//n9hJ89H84W3eS5PJf7zx1rlsyOH6gOlLy0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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