Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8232c0fd20e90485f17b5f463f9d783005ff2d4cf96db0b5fbf765eb76ccb924' 
  AND token = 'iTd2piic6jV0h0vWWqVv0QKE4FhuBl0FZWVMGbsGfFs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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