Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3725fbbab2958d63934f0b85554decf7637bb06493295e2d642eeb13f1f1b1eb' 
  AND token = 'yQjRS3O1+w+jVmbzPi7kI/lPreEs0XNi504UpTIA6jM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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