Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd31c0f69ceb0d83fef2be7cdfd334e3132d0001124bead5134ebb161226699eb' 
  AND token = 'HoH+GwiDB6iPE+VFnOsOM0AwM30mdmVH/o5UhLq3P0Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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