Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '39f63f648de8d3c5f932cdaec94133ec95001e98deefdf1f676479fafad9d845' 
  AND token = 'OUQ9loD46s+dV4lQS5WcP681meMhpnmzzQBDbvRKKJY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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