Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4f32de35f83c8eb66aaefb1147d662c81c5c2958698087ae60d124f6a1b56e23' 
  AND token = 'DKtDufN3Bpy4bgFw9oTqsuLCcZd8yV4d9KebaeX+TNg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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