Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eeaff0c03f32e481169ea59530625f1dc06524bca5c69ab033ad5d9b5b35bd64' 
  AND token = 'ITVPyUrlOwhFmUYLmgFrr0gpsRqeKbfx/lFbc3MUOdA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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